[PATCH v3 0/9] Tegra xHCI support

[Tomeu Vizoso]

On 2 September 2014 23:34, Andrew Bresticker <abrestic at chromium.org> wrote:
>
> Tested on Venice2, Jetson TK1, and Big with a variety of USB2.0 and
> USB3.0 memory sticks and ethernet dongles using controller firmware
> recently posted by Andrew Chew [2].

I have had mixed results when testing this on a Jetson TK1 board. Of 8
USB devices I tested with, about half where probed correctly, but the
other half repeatedly fail in hub_port_init because in the GET_STATUS
right after the reset, the C_PORT_CONNECTION bit is set.

I don't see any correlation between the failure and the kind of usb
device, but I don't have much experience with USB implementations
either.

Regards,

Tomeu

> Notes:
>  - HSIC support is mostly untested and I think there are still some issues
>    to work out there.  I do have a Tegra124 board with a HSIC hub so I'll
>    try to sort those out later.
>  - The XUSB padctl driver doesn't play nice with the existing Tegra USB2.0
>    PHY driver, so all ports should be assigned to the XHCI controller.
>
> Based on work by:
>   a lot of people, but from what I can tell from the L4T tree [3], the
>   original authors of the Tegra xHCI driver are:
>     Ajay Gupta <ajayg at nvidia.com>
>     Bharath Yadav <byadav at nvidia.com>
>
> Chagnes from v2:
>  - Dropped mailbox channel specifier.  The mailbox driver allocates virtual
>    channels backed by the single physical channel.
>  - Added support for HS_CURR_LEVEL adjustment pinconfig property, which
>    will be required for the Blaze board.
>  - Addressed Stephen's review comments.
>
> Changes from v1:
>  - Converted mailbox driver to use the common mailbox framework.
>  - Fixed up host driver so that it can now be built and used as a module.
>  - Addressed Stephen's review comments.
>  - Misc. cleanups.
>
> Changes from RFC:
>  - Dropped Tegra114 support.
>  - Split out mailbox into separate driver.
>  - Stopped using child xhci-plat device in xHCI host-controller driver.
>  - Added PHY support to Thierry's XUSB padctl driver instead of in a separate
>    USB PHY driver.
>  - Added Jetson TK1 support.
>  - Misc. cleanups.
>
> [0] https://lkml.org/lkml/2014/8/1/200
> [1] https://lkml.org/lkml/2014/8/18/504
> [2] https://patchwork.ozlabs.org/patch/384013/
> [3] git://nv-tegra.nvidia.com/linux-3.10.git
>
> Andrew Bresticker (9):
>   of: Add NVIDIA Tegra XUSB mailbox binding
>   mailbox: Add NVIDIA Tegra XUSB mailbox driver
>   of: Update Tegra XUSB pad controller binding for USB
>   pinctrl: tegra-xusb: Add USB PHY support
>   of: Add NVIDIA Tegra xHCI controller binding
>   usb: xhci: Add NVIDIA Tegra xHCI host-controller driver
>   ARM: tegra: Add Tegra124 XUSB mailbox and xHCI controller
>   ARM: tegra: jetson-tk1: Add xHCI support
>   ARM: tegra: venice2: Add xHCI support
>
>  .../bindings/mailbox/nvidia,tegra124-xusb-mbox.txt |   32 +
>  .../pinctrl/nvidia,tegra124-xusb-padctl.txt        |   56 +-
>  .../bindings/usb/nvidia,tegra124-xhci.txt          |  104 ++
>  arch/arm/boot/dts/tegra124-jetson-tk1.dts          |   48 +-
>  arch/arm/boot/dts/tegra124-venice2.dts             |   79 +-
>  arch/arm/boot/dts/tegra124.dtsi                    |   41 +
>  drivers/mailbox/Kconfig                            |    3 +
>  drivers/mailbox/Makefile                           |    2 +
>  drivers/mailbox/tegra-xusb-mailbox.c               |  290 +++++
>  drivers/pinctrl/Kconfig                            |    1 +
>  drivers/pinctrl/pinctrl-tegra-xusb.c               | 1233 +++++++++++++++++++-
>  drivers/usb/host/Kconfig                           |    9 +
>  drivers/usb/host/Makefile                          |    1 +
>  drivers/usb/host/xhci-tegra.c                      |  905 ++++++++++++++
>  include/dt-bindings/pinctrl/pinctrl-tegra-xusb.h   |   20 +
>  include/soc/tegra/xusb.h                           |   53 +
>  16 files changed, 2796 insertions(+), 81 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/mailbox/nvidia,tegra124-xusb-mbox.txt
>  create mode 100644 Documentation/devicetree/bindings/usb/nvidia,tegra124-xhci.txt
>  create mode 100644 drivers/mailbox/tegra-xusb-mailbox.c
>  create mode 100644 drivers/usb/host/xhci-tegra.c
>  create mode 100644 include/soc/tegra/xusb.h
>
> --
> 2.1.0.rc2.206.gedb03e5
>
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